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-rw-r--r--spa/plugins/control/mixer.c869
1 files changed, 869 insertions, 0 deletions
diff --git a/spa/plugins/control/mixer.c b/spa/plugins/control/mixer.c
new file mode 100644
index 0000000..9d28bef
--- /dev/null
+++ b/spa/plugins/control/mixer.c
@@ -0,0 +1,869 @@
+/* Spa
+ *
+ * Copyright © 2019 Wim Taymans
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+
+#include <spa/support/plugin.h>
+#include <spa/support/log.h>
+#include <spa/support/cpu.h>
+#include <spa/utils/list.h>
+#include <spa/utils/names.h>
+#include <spa/utils/string.h>
+#include <spa/node/node.h>
+#include <spa/node/utils.h>
+#include <spa/node/io.h>
+#include <spa/param/audio/format-utils.h>
+#include <spa/param/param.h>
+#include <spa/control/control.h>
+#include <spa/pod/filter.h>
+
+#define NAME "control-mixer"
+
+#define MAX_BUFFERS 64
+#define MAX_PORTS 128
+
+struct buffer {
+ uint32_t id;
+#define BUFFER_FLAG_QUEUED (1 << 0)
+ uint32_t flags;
+
+ struct spa_list link;
+ struct spa_buffer *buffer;
+};
+
+struct port {
+ uint32_t direction;
+ uint32_t id;
+
+ struct spa_io_buffers *io;
+
+ uint64_t info_all;
+ struct spa_port_info info;
+ struct spa_param_info params[8];
+
+ unsigned int valid:1;
+ unsigned int have_format:1;
+
+ struct buffer buffers[MAX_BUFFERS];
+ uint32_t n_buffers;
+
+ struct spa_list queue;
+};
+
+struct impl {
+ struct spa_handle handle;
+ struct spa_node node;
+
+ struct spa_log *log;
+
+ uint64_t info_all;
+ struct spa_node_info info;
+ struct spa_param_info params[8];
+
+ struct spa_hook_list hooks;
+
+ uint32_t port_count;
+ uint32_t last_port;
+ struct port *in_ports[MAX_PORTS];
+ struct port out_ports[1];
+
+ int n_formats;
+
+ unsigned int have_format:1;
+ unsigned int started:1;
+};
+
+#define PORT_VALID(p) ((p) != NULL && (p)->valid)
+#define CHECK_FREE_IN_PORT(this,d,p) ((d) == SPA_DIRECTION_INPUT && (p) < MAX_PORTS && !PORT_VALID(this->in_ports[(p)]))
+#define CHECK_IN_PORT(this,d,p) ((d) == SPA_DIRECTION_INPUT && (p) < MAX_PORTS && PORT_VALID(this->in_ports[(p)]))
+#define CHECK_OUT_PORT(this,d,p) ((d) == SPA_DIRECTION_OUTPUT && (p) == 0)
+#define CHECK_PORT(this,d,p) (CHECK_OUT_PORT(this,d,p) || CHECK_IN_PORT (this,d,p))
+#define GET_IN_PORT(this,p) (this->in_ports[p])
+#define GET_OUT_PORT(this,p) (&this->out_ports[p])
+#define GET_PORT(this,d,p) (d == SPA_DIRECTION_INPUT ? GET_IN_PORT(this,p) : GET_OUT_PORT(this,p))
+
+static int impl_node_enum_params(void *object, int seq,
+ uint32_t id, uint32_t start, uint32_t num,
+ const struct spa_pod *filter)
+{
+ return -ENOTSUP;
+}
+
+static int impl_node_set_param(void *object, uint32_t id, uint32_t flags,
+ const struct spa_pod *param)
+{
+ return -ENOTSUP;
+}
+
+static int impl_node_set_io(void *object, uint32_t id, void *data, size_t size)
+{
+ return -ENOTSUP;
+}
+
+static int impl_node_send_command(void *object, const struct spa_command *command)
+{
+ struct impl *this = object;
+
+ spa_return_val_if_fail(this != NULL, -EINVAL);
+ spa_return_val_if_fail(command != NULL, -EINVAL);
+
+ switch (SPA_NODE_COMMAND_ID(command)) {
+ case SPA_NODE_COMMAND_Start:
+ this->started = true;
+ break;
+ case SPA_NODE_COMMAND_Pause:
+ this->started = false;
+ break;
+ default:
+ return -ENOTSUP;
+ }
+ return 0;
+}
+
+static void emit_node_info(struct impl *this, bool full)
+{
+ uint64_t old = full ? this->info.change_mask : 0;
+ if (full)
+ this->info.change_mask = this->info_all;
+ if (this->info.change_mask) {
+ spa_node_emit_info(&this->hooks, &this->info);
+ this->info.change_mask = old;
+ }
+}
+
+static void emit_port_info(struct impl *this, struct port *port, bool full)
+{
+ uint64_t old = full ? port->info.change_mask : 0;
+ if (full)
+ port->info.change_mask = port->info_all;
+ if (port->info.change_mask) {
+ spa_node_emit_port_info(&this->hooks,
+ port->direction, port->id, &port->info);
+ port->info.change_mask = old;
+ }
+}
+
+static int impl_node_add_listener(void *object,
+ struct spa_hook *listener,
+ const struct spa_node_events *events,
+ void *data)
+{
+ struct impl *this = object;
+ struct spa_hook_list save;
+ uint32_t i;
+
+ spa_return_val_if_fail(this != NULL, -EINVAL);
+
+ spa_hook_list_isolate(&this->hooks, &save, listener, events, data);
+
+ emit_node_info(this, true);
+ emit_port_info(this, GET_OUT_PORT(this, 0), true);
+ for (i = 0; i < this->last_port; i++) {
+ if (PORT_VALID(this->in_ports[i]))
+ emit_port_info(this, GET_IN_PORT(this, i), true);
+ }
+
+ spa_hook_list_join(&this->hooks, &save);
+
+ return 0;
+}
+
+static int
+impl_node_set_callbacks(void *object,
+ const struct spa_node_callbacks *callbacks,
+ void *user_data)
+{
+ return 0;
+}
+
+static int impl_node_add_port(void *object, enum spa_direction direction, uint32_t port_id,
+ const struct spa_dict *props)
+{
+ struct impl *this = object;
+ struct port *port;
+
+ spa_return_val_if_fail(this != NULL, -EINVAL);
+ spa_return_val_if_fail(CHECK_FREE_IN_PORT(this, direction, port_id), -EINVAL);
+
+ port = GET_IN_PORT (this, port_id);
+ if (port == NULL) {
+ port = calloc(1, sizeof(struct port));
+ if (port == NULL)
+ return -errno;
+ this->in_ports[port_id] = port;
+ }
+
+ port->direction = direction;
+ port->id = port_id;
+
+ spa_list_init(&port->queue);
+ port->info_all = SPA_PORT_CHANGE_MASK_FLAGS |
+ SPA_PORT_CHANGE_MASK_PARAMS;
+ port->info = SPA_PORT_INFO_INIT();
+ port->info.flags = SPA_PORT_FLAG_NO_REF |
+ SPA_PORT_FLAG_DYNAMIC_DATA |
+ SPA_PORT_FLAG_REMOVABLE |
+ SPA_PORT_FLAG_OPTIONAL;
+ port->params[0] = SPA_PARAM_INFO(SPA_PARAM_EnumFormat, SPA_PARAM_INFO_READ);
+ port->params[1] = SPA_PARAM_INFO(SPA_PARAM_Meta, SPA_PARAM_INFO_READ);
+ port->params[2] = SPA_PARAM_INFO(SPA_PARAM_IO, SPA_PARAM_INFO_READ);
+ port->params[3] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_WRITE);
+ port->params[4] = SPA_PARAM_INFO(SPA_PARAM_Buffers, 0);
+ port->info.params = port->params;
+ port->info.n_params = 5;
+
+ this->port_count++;
+ if (this->last_port <= port_id)
+ this->last_port = port_id + 1;
+ port->valid = true;
+
+ spa_log_debug(this->log, NAME " %p: add port %d %d", this, port_id, this->last_port);
+ emit_port_info(this, port, true);
+
+ return 0;
+}
+
+static int
+impl_node_remove_port(void *object, enum spa_direction direction, uint32_t port_id)
+{
+ struct impl *this = object;
+ struct port *port;
+
+ spa_return_val_if_fail(this != NULL, -EINVAL);
+ spa_return_val_if_fail(CHECK_IN_PORT(this, direction, port_id), -EINVAL);
+
+ port = GET_IN_PORT (this, port_id);
+
+ port->valid = false;
+ this->port_count--;
+ if (port->have_format && this->have_format) {
+ if (--this->n_formats == 0)
+ this->have_format = false;
+ }
+ spa_memzero(port, sizeof(struct port));
+
+ if (port_id + 1 == this->last_port) {
+ int i;
+
+ for (i = this->last_port - 1; i >= 0; i--)
+ if (GET_IN_PORT (this, i)->valid)
+ break;
+
+ this->last_port = i + 1;
+ }
+ spa_log_debug(this->log, NAME " %p: remove port %d %d", this, port_id, this->last_port);
+
+ spa_node_emit_port_info(&this->hooks, direction, port_id, NULL);
+
+ return 0;
+}
+
+static int port_enum_formats(void *object,
+ enum spa_direction direction, uint32_t port_id,
+ uint32_t index,
+ struct spa_pod **param,
+ struct spa_pod_builder *builder)
+{
+ switch (index) {
+ case 0:
+ *param = spa_pod_builder_add_object(builder,
+ SPA_TYPE_OBJECT_Format, SPA_PARAM_EnumFormat,
+ SPA_FORMAT_mediaType, SPA_POD_Id(SPA_MEDIA_TYPE_application),
+ SPA_FORMAT_mediaSubtype, SPA_POD_Id(SPA_MEDIA_SUBTYPE_control));
+ break;
+ default:
+ return 0;
+ }
+ return 1;
+}
+
+static int
+impl_node_port_enum_params(void *object, int seq,
+ enum spa_direction direction, uint32_t port_id,
+ uint32_t id, uint32_t start, uint32_t num,
+ const struct spa_pod *filter)
+{
+ struct impl *this = object;
+ struct port *port;
+ struct spa_pod *param;
+ struct spa_pod_builder b = { 0 };
+ uint8_t buffer[1024];
+ struct spa_result_node_params result;
+ uint32_t count = 0;
+ int res;
+
+ spa_return_val_if_fail(this != NULL, -EINVAL);
+ spa_return_val_if_fail(num != 0, -EINVAL);
+ spa_return_val_if_fail(CHECK_PORT(this, direction, port_id), -EINVAL);
+
+ port = GET_PORT(this, direction, port_id);
+
+ result.id = id;
+ result.next = start;
+next:
+ result.index = result.next++;
+
+ spa_pod_builder_init(&b, buffer, sizeof(buffer));
+
+ switch (id) {
+ case SPA_PARAM_EnumFormat:
+ if ((res = port_enum_formats(this, direction, port_id, result.index, &param, &b)) <= 0)
+ return res;
+ break;
+
+ case SPA_PARAM_Format:
+ if (!port->have_format)
+ return -EIO;
+ if ((res = port_enum_formats(this, direction, port_id, result.index, &param, &b)) <= 0)
+ return res;
+ break;
+
+ case SPA_PARAM_Buffers:
+ if (!port->have_format)
+ return -EIO;
+ if (result.index > 0)
+ return 0;
+
+ param = spa_pod_builder_add_object(&b,
+ SPA_TYPE_OBJECT_ParamBuffers, id,
+ SPA_PARAM_BUFFERS_buffers, SPA_POD_CHOICE_RANGE_Int(2, 1, MAX_BUFFERS),
+ SPA_PARAM_BUFFERS_blocks, SPA_POD_Int(1),
+ SPA_PARAM_BUFFERS_size, SPA_POD_CHOICE_RANGE_Int(4096, 512, INT32_MAX),
+ SPA_PARAM_BUFFERS_stride, SPA_POD_Int(1));
+ break;
+
+ case SPA_PARAM_IO:
+ switch (result.index) {
+ case 0:
+ param = spa_pod_builder_add_object(&b,
+ SPA_TYPE_OBJECT_ParamIO, id,
+ SPA_PARAM_IO_id, SPA_POD_Id(SPA_IO_Buffers),
+ SPA_PARAM_IO_size, SPA_POD_Int(sizeof(struct spa_io_buffers)));
+ break;
+ default:
+ return 0;
+ }
+ break;
+ default:
+ return -ENOENT;
+ }
+
+ if (spa_pod_filter(&b, &result.param, param, filter) < 0)
+ goto next;
+
+ spa_node_emit_result(&this->hooks, seq, 0, SPA_RESULT_TYPE_NODE_PARAMS, &result);
+
+ if (++count != num)
+ goto next;
+
+ return 0;
+}
+
+static int clear_buffers(struct impl *this, struct port *port)
+{
+ if (port->n_buffers > 0) {
+ spa_log_debug(this->log, NAME " %p: clear buffers %p", this, port);
+ port->n_buffers = 0;
+ spa_list_init(&port->queue);
+ }
+ return 0;
+}
+
+static int queue_buffer(struct impl *this, struct port *port, struct buffer *b)
+{
+ if (SPA_FLAG_IS_SET(b->flags, BUFFER_FLAG_QUEUED))
+ return -EINVAL;
+
+ spa_list_append(&port->queue, &b->link);
+ SPA_FLAG_SET(b->flags, BUFFER_FLAG_QUEUED);
+ spa_log_trace_fp(this->log, NAME " %p: queue buffer %d", this, b->id);
+ return 0;
+}
+
+static struct buffer *dequeue_buffer(struct impl *this, struct port *port)
+{
+ struct buffer *b;
+
+ if (spa_list_is_empty(&port->queue))
+ return NULL;
+
+ b = spa_list_first(&port->queue, struct buffer, link);
+ spa_list_remove(&b->link);
+ SPA_FLAG_CLEAR(b->flags, BUFFER_FLAG_QUEUED);
+ spa_log_trace_fp(this->log, NAME " %p: dequeue buffer %d", this, b->id);
+ return b;
+}
+
+static int port_set_format(void *object,
+ enum spa_direction direction,
+ uint32_t port_id,
+ uint32_t flags,
+ const struct spa_pod *format)
+{
+ struct impl *this = object;
+ struct port *port;
+ int res;
+
+ port = GET_PORT(this, direction, port_id);
+
+ if (format == NULL) {
+ if (port->have_format) {
+ port->have_format = false;
+ if (--this->n_formats == 0)
+ this->have_format = false;
+ clear_buffers(this, port);
+ }
+ } else {
+ uint32_t media_type, media_subtype;
+ if ((res = spa_format_parse(format, &media_type, &media_subtype)) < 0)
+ return res;
+
+ if (media_type != SPA_MEDIA_TYPE_application ||
+ media_subtype != SPA_MEDIA_SUBTYPE_control)
+ return -EINVAL;
+
+ this->have_format = true;
+
+ if (!port->have_format) {
+ this->n_formats++;
+ port->have_format = true;
+ spa_log_debug(this->log, NAME " %p: set format on port %d:%d",
+ this, direction, port_id);
+ }
+ }
+ port->info.change_mask |= SPA_PORT_CHANGE_MASK_PARAMS;
+ if (port->have_format) {
+ port->params[3] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_READWRITE);
+ port->params[4] = SPA_PARAM_INFO(SPA_PARAM_Buffers, SPA_PARAM_INFO_READ);
+ } else {
+ port->params[3] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_WRITE);
+ port->params[4] = SPA_PARAM_INFO(SPA_PARAM_Buffers, 0);
+ }
+ emit_port_info(this, port, false);
+
+ return 0;
+}
+
+
+static int
+impl_node_port_set_param(void *object,
+ enum spa_direction direction, uint32_t port_id,
+ uint32_t id, uint32_t flags,
+ const struct spa_pod *param)
+{
+ struct impl *this = object;
+
+ spa_return_val_if_fail(this != NULL, -EINVAL);
+ spa_return_val_if_fail(CHECK_PORT(this, direction, port_id), -EINVAL);
+
+ if (id == SPA_PARAM_Format) {
+ return port_set_format(this, direction, port_id, flags, param);
+ }
+ else
+ return -ENOENT;
+}
+
+static int
+impl_node_port_use_buffers(void *object,
+ enum spa_direction direction,
+ uint32_t port_id,
+ uint32_t flags,
+ struct spa_buffer **buffers,
+ uint32_t n_buffers)
+{
+ struct impl *this = object;
+ struct port *port;
+ uint32_t i;
+
+ spa_return_val_if_fail(this != NULL, -EINVAL);
+ spa_return_val_if_fail(CHECK_PORT(this, direction, port_id), -EINVAL);
+
+ port = GET_PORT(this, direction, port_id);
+
+ spa_log_debug(this->log, NAME " %p: use buffers %d on port %d:%d",
+ this, n_buffers, direction, port_id);
+
+ clear_buffers(this, port);
+
+ if (n_buffers > 0 && !port->have_format)
+ return -EIO;
+ if (n_buffers > MAX_BUFFERS)
+ return -ENOSPC;
+
+ for (i = 0; i < n_buffers; i++) {
+ struct buffer *b;
+ struct spa_data *d = buffers[i]->datas;
+
+ b = &port->buffers[i];
+ b->buffer = buffers[i];
+ b->flags = 0;
+ b->id = i;
+
+ if (d[0].data == NULL) {
+ spa_log_error(this->log, NAME " %p: invalid memory on buffer %d", this, i);
+ return -EINVAL;
+ }
+ if (direction == SPA_DIRECTION_OUTPUT)
+ queue_buffer(this, port, b);
+ }
+ port->n_buffers = n_buffers;
+
+ return 0;
+}
+
+static int
+impl_node_port_set_io(void *object,
+ enum spa_direction direction, uint32_t port_id,
+ uint32_t id, void *data, size_t size)
+{
+ struct impl *this = object;
+ struct port *port;
+
+ spa_return_val_if_fail(this != NULL, -EINVAL);
+ spa_return_val_if_fail(CHECK_PORT(this, direction, port_id), -EINVAL);
+
+ port = GET_PORT(this, direction, port_id);
+
+ spa_log_debug(this->log, NAME " %p: port %d:%d io %d %p/%zd", this,
+ direction, port_id, id, data, size);
+
+ switch (id) {
+ case SPA_IO_Buffers:
+ port->io = data;
+ break;
+ default:
+ return -ENOENT;
+ }
+ return 0;
+}
+
+static int impl_node_port_reuse_buffer(void *object, uint32_t port_id, uint32_t buffer_id)
+{
+ struct impl *this = object;
+ struct port *port;
+
+ spa_return_val_if_fail(this != NULL, -EINVAL);
+ spa_return_val_if_fail(CHECK_PORT(this, SPA_DIRECTION_OUTPUT, port_id), -EINVAL);
+ port = GET_OUT_PORT(this, 0);
+
+ if (buffer_id >= port->n_buffers)
+ return -EINVAL;
+
+ return queue_buffer(this, port, &port->buffers[buffer_id]);
+}
+
+static inline int event_sort(struct spa_pod_control *a, struct spa_pod_control *b)
+{
+ if (a->offset < b->offset)
+ return -1;
+ if (a->offset > b->offset)
+ return 1;
+ if (a->type != b->type)
+ return 0;
+ switch(a->type) {
+ case SPA_CONTROL_Midi:
+ {
+ /* 11 (controller) > 12 (program change) >
+ * 8 (note off) > 9 (note on) > 10 (aftertouch) >
+ * 13 (channel pressure) > 14 (pitch bend) */
+ static int priotab[] = { 5,4,3,7,6,2,1,0 };
+ uint8_t *da, *db;
+
+ if (SPA_POD_BODY_SIZE(&a->value) < 1 ||
+ SPA_POD_BODY_SIZE(&b->value) < 1)
+ return 0;
+
+ da = SPA_POD_BODY(&a->value);
+ db = SPA_POD_BODY(&b->value);
+ if ((da[0] & 0xf) != (db[0] & 0xf))
+ return 0;
+ return priotab[(db[0]>>4) & 7] - priotab[(da[0]>>4) & 7];
+ }
+ default:
+ return 0;
+ }
+}
+
+static int impl_node_process(void *object)
+{
+ struct impl *this = object;
+ struct port *outport;
+ struct spa_io_buffers *outio;
+ uint32_t n_seq, i;
+ struct spa_pod_sequence **seq;
+ struct spa_pod_control **ctrl;
+ struct spa_pod_builder builder;
+ struct spa_pod_frame f;
+ struct buffer *outb;
+ struct spa_data *d;
+
+ spa_return_val_if_fail(this != NULL, -EINVAL);
+
+ outport = GET_OUT_PORT(this, 0);
+ if ((outio = outport->io) == NULL)
+ return -EIO;
+
+ spa_log_trace_fp(this->log, NAME " %p: status %p %d %d",
+ this, outio, outio->status, outio->buffer_id);
+
+ if (outio->status == SPA_STATUS_HAVE_DATA)
+ return outio->status;
+
+ /* recycle */
+ if (outio->buffer_id < outport->n_buffers) {
+ queue_buffer(this, outport, &outport->buffers[outio->buffer_id]);
+ outio->buffer_id = SPA_ID_INVALID;
+ }
+
+ /* get output buffer */
+ if ((outb = dequeue_buffer(this, outport)) == NULL) {
+ spa_log_trace(this->log, NAME " %p: out of buffers", this);
+ return -EPIPE;
+ }
+
+ ctrl = alloca(MAX_PORTS * sizeof(struct spa_pod_control *));
+ seq = alloca(MAX_PORTS * sizeof(struct spa_pod_sequence *));
+ n_seq = 0;
+
+ /* collect all sequence pod on input ports */
+ for (i = 0; i < this->last_port; i++) {
+ struct port *inport = GET_IN_PORT(this, i);
+ struct spa_io_buffers *inio = NULL;
+ void *pod;
+
+ if (!inport->valid ||
+ (inio = inport->io) == NULL ||
+ inio->buffer_id >= inport->n_buffers ||
+ inio->status != SPA_STATUS_HAVE_DATA) {
+ spa_log_trace_fp(this->log, NAME " %p: skip input idx:%d valid:%d "
+ "io:%p status:%d buf_id:%d n_buffers:%d", this,
+ i, inport->valid, inio,
+ inio ? inio->status : -1,
+ inio ? inio->buffer_id : SPA_ID_INVALID,
+ inport->n_buffers);
+ continue;
+ }
+
+ spa_log_trace_fp(this->log, NAME " %p: mix input %d %p->%p %d %d", this,
+ i, inio, outio, inio->status, inio->buffer_id);
+
+ d = inport->buffers[inio->buffer_id].buffer->datas;
+
+ if ((pod = spa_pod_from_data(d->data, d->maxsize,
+ d->chunk->offset, d->chunk->size)) == NULL)
+ continue;
+ if (!spa_pod_is_sequence(pod))
+ continue;
+
+ seq[n_seq] = pod;
+ ctrl[n_seq] = spa_pod_control_first(&seq[n_seq]->body);
+ inio->status = SPA_STATUS_NEED_DATA;
+ n_seq++;
+ }
+
+ d = outb->buffer->datas;
+
+ /* prepare to write into output */
+ spa_pod_builder_init(&builder, d->data, d->maxsize);
+ spa_pod_builder_push_sequence(&builder, &f, 0);
+
+ /* merge sort all sequences into output buffer */
+ while (true) {
+ struct spa_pod_control *next = NULL;
+ uint32_t next_index = 0;
+
+ for (i = 0; i < n_seq; i++) {
+ if (!spa_pod_control_is_inside(&seq[i]->body,
+ SPA_POD_BODY_SIZE(seq[i]), ctrl[i]))
+ continue;
+
+ if (next == NULL || event_sort(ctrl[i], next) <= 0) {
+ next = ctrl[i];
+ next_index = i;
+ }
+ }
+ if (next == NULL)
+ break;
+
+ spa_pod_builder_control(&builder, next->offset, next->type);
+ spa_pod_builder_primitive(&builder, &next->value);
+
+ ctrl[next_index] = spa_pod_control_next(ctrl[next_index]);
+ }
+ spa_pod_builder_pop(&builder, &f);
+
+ d->chunk->offset = 0;
+ d->chunk->size = builder.state.offset;
+ d->chunk->stride = 1;
+ d->chunk->flags = 0;
+
+ outio->buffer_id = outb->id;
+ outio->status = SPA_STATUS_HAVE_DATA;
+
+ return SPA_STATUS_HAVE_DATA | SPA_STATUS_NEED_DATA;
+}
+
+static const struct spa_node_methods impl_node = {
+ SPA_VERSION_NODE_METHODS,
+ .add_listener = impl_node_add_listener,
+ .set_callbacks = impl_node_set_callbacks,
+ .enum_params = impl_node_enum_params,
+ .set_param = impl_node_set_param,
+ .set_io = impl_node_set_io,
+ .send_command = impl_node_send_command,
+ .add_port = impl_node_add_port,
+ .remove_port = impl_node_remove_port,
+ .port_enum_params = impl_node_port_enum_params,
+ .port_set_param = impl_node_port_set_param,
+ .port_use_buffers = impl_node_port_use_buffers,
+ .port_set_io = impl_node_port_set_io,
+ .port_reuse_buffer = impl_node_port_reuse_buffer,
+ .process = impl_node_process,
+};
+
+static int impl_get_interface(struct spa_handle *handle, const char *type, void **interface)
+{
+ struct impl *this;
+
+ spa_return_val_if_fail(handle != NULL, -EINVAL);
+ spa_return_val_if_fail(interface != NULL, -EINVAL);
+
+ this = (struct impl *) handle;
+
+ if (spa_streq(type, SPA_TYPE_INTERFACE_Node))
+ *interface = &this->node;
+ else
+ return -ENOENT;
+
+ return 0;
+}
+
+static int impl_clear(struct spa_handle *handle)
+{
+ struct impl *this;
+ uint32_t i;
+
+ spa_return_val_if_fail(handle != NULL, -EINVAL);
+
+ this = (struct impl *) handle;
+
+ for (i = 0; i < MAX_PORTS; i++)
+ free(this->in_ports[i]);
+ return 0;
+}
+
+static size_t
+impl_get_size(const struct spa_handle_factory *factory,
+ const struct spa_dict *params)
+{
+ return sizeof(struct impl);
+}
+
+static int
+impl_init(const struct spa_handle_factory *factory,
+ struct spa_handle *handle,
+ const struct spa_dict *info,
+ const struct spa_support *support,
+ uint32_t n_support)
+{
+ struct impl *this;
+ struct port *port;
+
+ spa_return_val_if_fail(factory != NULL, -EINVAL);
+ spa_return_val_if_fail(handle != NULL, -EINVAL);
+
+ handle->get_interface = impl_get_interface;
+ handle->clear = impl_clear;
+
+ this = (struct impl *) handle;
+
+ this->log = spa_support_find(support, n_support, SPA_TYPE_INTERFACE_Log);
+
+ spa_hook_list_init(&this->hooks);
+
+ this->node.iface = SPA_INTERFACE_INIT(
+ SPA_TYPE_INTERFACE_Node,
+ SPA_VERSION_NODE,
+ &impl_node, this);
+ this->info = SPA_NODE_INFO_INIT();
+ this->info.max_input_ports = MAX_PORTS;
+ this->info.max_output_ports = 1;
+ this->info.change_mask |= SPA_NODE_CHANGE_MASK_FLAGS;
+ this->info.flags = SPA_NODE_FLAG_RT | SPA_NODE_FLAG_IN_DYNAMIC_PORTS;
+
+ port = GET_OUT_PORT(this, 0);
+ port->valid = true;
+ port->direction = SPA_DIRECTION_OUTPUT;
+ port->id = 0;
+ port->info = SPA_PORT_INFO_INIT();
+ port->info.change_mask |= SPA_PORT_CHANGE_MASK_FLAGS;
+ port->info.flags = SPA_PORT_FLAG_DYNAMIC_DATA;
+ port->info.change_mask |= SPA_PORT_CHANGE_MASK_PARAMS;
+ port->params[0] = SPA_PARAM_INFO(SPA_PARAM_EnumFormat, SPA_PARAM_INFO_READ);
+ port->params[1] = SPA_PARAM_INFO(SPA_PARAM_Meta, SPA_PARAM_INFO_READ);
+ port->params[2] = SPA_PARAM_INFO(SPA_PARAM_IO, SPA_PARAM_INFO_READ);
+ port->params[3] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_WRITE);
+ port->params[4] = SPA_PARAM_INFO(SPA_PARAM_Buffers, 0);
+ port->info.params = port->params;
+ port->info.n_params = 5;
+
+ spa_list_init(&port->queue);
+
+ return 0;
+}
+
+static const struct spa_interface_info impl_interfaces[] = {
+ {SPA_TYPE_INTERFACE_Node,},
+};
+
+static int
+impl_enum_interface_info(const struct spa_handle_factory *factory,
+ const struct spa_interface_info **info,
+ uint32_t *index)
+{
+ spa_return_val_if_fail(factory != NULL, -EINVAL);
+ spa_return_val_if_fail(info != NULL, -EINVAL);
+ spa_return_val_if_fail(index != NULL, -EINVAL);
+
+ switch (*index) {
+ case 0:
+ *info = &impl_interfaces[*index];
+ break;
+ default:
+ return 0;
+ }
+ (*index)++;
+ return 1;
+}
+
+const struct spa_handle_factory spa_control_mixer_factory = {
+ SPA_VERSION_HANDLE_FACTORY,
+ SPA_NAME_CONTROL_MIXER,
+ NULL,
+ impl_get_size,
+ impl_init,
+ impl_enum_interface_info,
+};
generated by cgit v1.2.3 (git 2.39.1) at 2024-09-22 23:23:33 +0000